
Date.prototype.format = function (format) {
	var o = {
		"M+": this.getMonth() + 1,
		"d+": this.getDate(),
		"h+": this.getHours(),
		"m+": this.getMinutes(),
		"s+": this.getSeconds(),  
		"q+": Math.floor((this.getMonth() + 3) / 3),  
		"S": this.getMilliseconds()  
	}  
	if (/(y+)/.test(format)) {  
		format = format.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));  
	}  
	for (var k in o) {  
		if (new RegExp("(" + k + ")").test(format)) {  
			format = format.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));  
		}  
	}  
	return format;  
}